TEA1750T/N1/DG,518 NXP Semiconductors, TEA1750T/N1/DG,518 Datasheet - Page 14

• Manufacturer Part Number: TEA1750T/N1/DG,518
• Description: IC PFC CONTROLLER 16SO
• Manufacturer: NXP Semiconductors
• Series: GreenChip™ IIIr

Specifications of TEA1750T/N1/DG,518

• Mode: Discontinuous Conduction (DCM)
• Frequency - Switching: 100kHz ~ 150kHz
• Current - Startup: 60µA
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Output Voltage: 12 V
• Output Current: - 80 uA
• Output Power: 0.6 W
• Duty Cycle (max): 10 %
• Input Voltage: 70 VAC to 276 VAC
• Switching Frequency: 125 KHz
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Operating Temperature: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

NXP Semiconductors
TEA1750_2
Product data sheet
7.3.3 Current mode control (FBSENSE pin)
Current mode control is used for the flyback converter for its good line regulation.
The primary current is sensed by the FBSENSE pin across an external resistor and
compared with an internal control voltage.The internal control voltage is proportional to
the FBCTRL pin voltage.
Fig 9.
(1) Start of new cycle at lowest drain voltage.
(2) Start of new cycle in a classical Pulse Width Modulation (PWM) system without valley detection.
Signals for valley switching
secondary
oscillator
stroke
valley
drain
Rev. 02 — 15 December 2008
primary
stroke
secondary
stroke
secondary
ringing
GreenChip III SMPS control IC
(2)
014aaa027
TEA1750
© NXP B.V. 2008. All rights reserved.
(1)
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